diff --git a/proxy_params b/proxy_params
index 1d40bbc..f734212 100644
--- a/proxy_params
+++ b/proxy_params
@@ -7,7 +7,13 @@ proxy_set_header X-Real-IP $remote_addr;
 proxy_set_header Accept-Encoding "";
 proxy_set_header Host $host;
 
-proxy_next_upstream error timeout;
+proxy_set_header Early-Data $ssl_early_data;
+proxy_buffering off;
+proxy_request_buffering off;
+
+proxy_next_upstream error timeout invalid_header http_500;
+proxy_next_upstream_timeout 3s;
+proxy_next_upstream_tries 2;
 
 client_body_buffer_size 512k;
 proxy_read_timeout 86400s;